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  2. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    Powers of 2 appear in set theory, since a set with n members has a power set, the set of all of its subsets, which has 2 n members. Integer powers of 2 are important in computer science. The positive integer powers 2 n give the number of possible values for an n-bit integer binary number; for example, a byte may take 2 8 = 256 different values.

  3. Power of two - Wikipedia

    en.wikipedia.org/wiki/Power_of_two

    The sum 31 multiplied by 16 (the 5th term in the series) equals 496, which is a perfect number. Book IX, Proposition 35, proves that in a geometric series if the first term is subtracted from the second and last term in the sequence, then as the excess of the second is to the first—so is the excess of the last to all those before it.

  4. Seven heavens - Wikipedia

    en.wikipedia.org/wiki/Seven_Heavens

    The concept of seven heavens as developed in ancient Mesopotamia where it took on a symbolic or magical meaning as opposed to a literal one. [4] The concept of a seven-tiered was likely In the Sumerian language, the words for heavens (or sky) and Earth are An and Ki. [5]

  5. Huh? Here's Exactly What 'HEA' Means in a Book - AOL

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  6. Seven seals - Wikipedia

    en.wikipedia.org/wiki/Seven_seals

    The Book with Seven Seals, an oratorio by Austrian composer Franz Schmidt. The Seventh Seal, a 1957 Swedish film by Ingmar Bergman. Greek rock band Aphrodite's Child released a song called "The Four Horsemen', which directly references the first four seals. The Fifth Seal, a 1976 Hungarian film by Zoltán Fábri.

  7. Fifth power (algebra) - Wikipedia

    en.wikipedia.org/wiki/Fifth_power_(algebra)

    In arithmetic and algebra, the fifth power or sursolid [1] of a number n is the result of multiplying five instances of n together: n 5 = n × n × n × n × n. Fifth powers are also formed by multiplying a number by its fourth power, or the square of a number by its cube. The sequence of fifth powers of integers is:

  8. The Fifth Head of Cerberus - Wikipedia

    en.wikipedia.org/wiki/The_Fifth_Head_of_Cerberus

    The Fifth Head of Cerberus is the title of both a novella and a single-volume collection of three novellas, written by American science fiction and fantasy author Gene Wolfe, both published in 1972. The novella was included in the anthology Nebula Award Stories Eight .

  9. Ordinal numeral - Wikipedia

    en.wikipedia.org/wiki/Ordinal_numeral

    For multiples of ten, the same principle applies, with terminal -y changed to -ieth, as "sixtieth". For other numbers, the elements of the cardinal number are used, with the last word replaced by the ordinal: 23 → "twenty-third"; 523 → "five hundred twenty-third" ( British English : "five hundred and twenty-third").